SurfaceChange Platinum LightEmiting FM_KPFM PVA Nickel TriGlycineSulphate gallium_nitride Christmas StyreneBeads Polyurethane graphene_hybrid India Inorganic_Compound CrAu Ni81Fe19 Hole Display WWafer HardDisk ImideMonomer semifluorinated alkane PolyimideFilm thermal_property Roughness Defect LateralPFM 2d_materials LeakageCurrent hydrocarbon ito_film SmalScan KPFM IVSpectroscopy SicMosfet